How to use the gtts.utils.dataIO.fileIO function in gTTS

async def transfer_playlist(self, message):
        msg = message.attachments[0]
        if msg["filename"].endswith(".txt"):
            if not fileIO("data/audio/playlists/" + msg["filename"], "check"): #returns false if file already exists
                r = await aiohttp.get(msg["url"])
                r = await r.text()
                data = r.replace("\r", "")
                data = data.split()
                if self.is_playlist_valid(data) and self.is_playlist_name_valid(msg["filename"].replace(".txt", "")):
                    data = { "author" : message.author.id,
                             "playlist": data,
                             "link"    : False}
                    fileIO("data/audio/playlists/" + msg["filename"], "save", data)
                    await self.bot.send_message(message.channel, "Playlist added. Name: {}".format(msg["filename"].replace(".txt", "")))
                else:
                    await self.bot.send_message(message.channel, "Something is wrong with the playlist or its filename.") # Add formatting info
            else:
                await self.bot.send_message(message.channel, "A playlist with that name already exists. Change the filename and resubmit it.")

def is_playlist_valid(self, data):
        data = [y for y in data if y != ""] # removes all empty elements
        data = [y for y in data if y != "\n"]
        pattern = "|".join(fileIO("data/audio/accepted_links.json", "load"))
        for link in data:
            rr = re.search(pattern, link, re.I | re.U)
            if rr == None:
                return False
        return True

else: #consistency check
        current = fileIO(settings_path, "load")
        if current.keys() != default.keys():
            for key in default.keys():
                if key not in current.keys():
                    current[key] = default[key]
                    print("Adding " + str(key) + " field to audio settings.json")
            fileIO(settings_path, "save", current)


    allowed = ["^(https:\/\/www\\.youtube\\.com\/watch\\?v=...........*)", "^(https:\/\/youtu.be\/...........*)",
              "^(https:\/\/youtube\\.com\/watch\\?v=...........*)", "^(https:\/\/soundcloud\\.com\/.*)"]

    if not os.path.isfile("data/audio/accepted_links.json"):
        print("Creating accepted_links.json...")
        fileIO("data/audio/accepted_links.json", "save", allowed)

async def delplaylist(self, ctx, name : str):
        """Deletes playlist
        Limited to owner, admins and author of the playlist."""
        file_path = "data/audio/playlists/" + name + ".txt"
        author = ctx.message.author
        if fileIO(file_path, "check"):
            playlist_author_id = fileIO(file_path, "load")["author"]
            check = await self.admin_or_owner(ctx.message)
            if check or author.id == playlist_author_id:
                os.remove(file_path)
                await self.bot.say("Playlist {} has been removed.".format(name))
            else:
                await self.bot.say("Only owner, admins and the author of the playlist can delete it.")
        else:
            await self.bot.say("There's no playlist with that name.")

def __init__(self, bot):
        self.bot = bot
        self.music_player = EmptyPlayer()
        self.sfx_player = EmptyPlayer()
        self.tts_player = EmptyPlayer()
        files = glob.glob("data/audio/tts/*") # Start with an clean TTS folder.
        for f in files:
            os.remove(f)        
        self.settings = fileIO("data/audio/settings.json", "load")
        self.queue_mode = False
        self.queue = []
        self.playlist = []
        self.current = -1 #current track index in self.playlist
        self.downloader = {"DONE" : False, "TITLE" : False, "ID" : False, "URL" : False, "DURATION" : False, "DOWNLOADING" : False}
        self.skip_votes = []
        self.cleanup_timer = int(time.perf_counter())
        self.past_titles = [] # This is to prevent the audio module from setting the status to None if a status other than a track's title gets set

        self.sing =  ["https://www.youtube.com/watch?v=zGTkAVsrfg8", "https://www.youtube.com/watch?v=cGMWL8cOeAU",
                     "https://www.youtube.com/watch?v=vFrjMq4aL-g", "https://www.youtube.com/watch?v=WROI5WYBU_A",
                     "https://www.youtube.com/watch?v=41tIUr_ex3g", "https://www.youtube.com/watch?v=f9O2Rjn1azc"]

def check_files():

    default = {"VOLUME" : 0.5, "MAX_LENGTH" : 3700, "QUEUE_MODE" : True, "MAX_CACHE" : 0, "SOUNDCLOUD_CLIENT_ID": None, "TITLE_STATUS" : True, "SERVER_SFX_ON" : {}}
    settings_path = "data/audio/settings.json"

    if not os.path.isfile(settings_path):
        print("Creating default audio settings.json...")
        fileIO(settings_path, "save", default)
    else: #consistency check
        current = fileIO(settings_path, "load")
        if current.keys() != default.keys():
            for key in default.keys():
                if key not in current.keys():
                    current[key] = default[key]
                    print("Adding " + str(key) + " field to audio settings.json")
            fileIO(settings_path, "save", current)


    allowed = ["^(https:\/\/www\\.youtube\\.com\/watch\\?v=...........*)", "^(https:\/\/youtu.be\/...........*)",
              "^(https:\/\/youtube\\.com\/watch\\?v=...........*)", "^(https:\/\/soundcloud\\.com\/.*)"]

    if not os.path.isfile("data/audio/accepted_links.json"):
        print("Creating accepted_links.json...")
        fileIO("data/audio/accepted_links.json", "save", allowed)

async def queueset(self):
        """Enables/disables forced queue"""
        self.settings["QUEUE_MODE"] = not self.settings["QUEUE_MODE"]
        if self.settings["QUEUE_MODE"]:
            await self.bot.say("Queue mode is now on.")
        else:
            await self.bot.say("Queue mode is now off.")
        fileIO("data/audio/settings.json", "save", self.settings)

async def addplaylist(self, ctx, name : str, link : str): #CHANGE COMMAND NAME
        """Adds tracks from youtube / soundcloud playlist link"""
        if self.is_playlist_name_valid(name) and len(name) < 25:
            if fileIO("playlists/" + name + ".txt", "check"):
                await self.bot.say("`A playlist with that name already exists.`")
                return False
            if "youtube" in link.lower():
                links = await self.parse_yt_playlist(link)
            elif "soundcloud" in link.lower():
                links = await self.parse_sc_playlist(link)
            if links:
                data = { "author"  : ctx.message.author.id,
                         "playlist": links,
                         "link"    : link}
                fileIO("data/audio/playlists/" + name + ".txt", "save", data)
                await self.bot.say("Playlist added. Name: {}, songs: {}".format(name, str(len(links))))
            else:
                await self.bot.say("Something went wrong. Either the link was incorrect or I was unable to retrieve the page.")
        else:
            await self.bot.say("Something is wrong with the playlist's link or its filename. Remember, the name must be with only numbers, letters and underscores.")